.main {
  width: 100%;
}

.nav {
  display: flex;
  width: 100%;
  box-sizing: border-box;
  background-color: #333;
  
  
}

.nav a:hover {
  background: #bbb;
  color: #000;
}

.nav a {
  color: azure;
  padding: 10px 30px;
  display: inline-block;
  line-height: 30px;

}
.dhl2{
  display: flex;
}
.logo {
  width: 90px;
  height: 50px;
}

.dhlheader {
  background-image: url(./dhlimg/背景1.jfif);
  opacity: 0.8;
  padding: 10px;
  width: 100%;
  height: 35px;
  box-sizing: border-box;
  color: azure;
  padding: 0px 20px;
  display: inline-block;

}

.dhlheader a {
  color: azure;
  padding: 10px 20px;
  display: inline-block;

}

.anniu{
  float: right;
  /* padding: 5px; */
  margin: 5px;
}
.lside{
  width: 10px;
  float: left;
}
.rside{
  width: 10px;
  float: right;
}
.content{
  margin-top: 2px;
  margin-bottom: 40px;

}
.lside.rside.content{
  padding: 5px;
}
@media(max-width:789px){
  .content1{
    width: 400px;
  }
  .dhlheader{
    height: auto;
  }
}